Victor Buono portrays a serial killer.

The .mkv (Matroska) file is the uploaded file. Download it if your player can handle h.265 (HEVC).
Update
Now there is available an alternate version of a segment near the beginning of the film. (The_Strangler--alt.ogv)
Copyright statusIn the opening credits we see:
"COPYRIGHT MCMLXIII by ALLIED ARTISTS PICTURES CORPORATION."
Since the date of copyright was 1963, a copyright renewal was required after 28 years. However, there is none to be found.
This film is in the public domain.